Window-ventilator.



L. W. WANEMAKER.

WINDOW VENTILATOR.

APPLICATION FILED MAR. 8. I9I6.

Patented Apr. 2, 1918.

2 SHEETS-SHEET l- L. W. WANEMAKER.

WINDOW VENTILATOR.

APPLICATION FILED MAR. 8. 1915.

Patented Apr. 2, 1918.

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2 SHEETSS.HEET 2.

LOUIS W. WAN'EMAKER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE WINDOW VENTI-LATOR COMPANY OF AMERICA, A CORPORATION OF ILLINOIS.

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WINDOW-VENTILATOR.

memes.

Specification of Letters Patent.

Patented Apr. 2, 1918.

Application filed March 8, 1916. Serial No. 82,794.

To all whom it may concern:

Be it known that I, Loms IV. WANE- MAKER, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Window-Ventilators, of which the following is a specification.

My invention relates to improvements in window ventilators andparticularly to a ventilator for cooperation with the ordinaryvertically sliding, handle equipped, lower sash of customary windowconstruction.

One object of my invention is to provide a ventilator which willaccommodate the customary lifting handle of the sliding sash and willnormally cooperate therewith to limit the sliding movement of the sashto that which will open or close the intake of the ventilator, but whichis bodily tiltable without disconnection from the window casing topermit raising of the window sash to its full height.

Another object of my invention is to provide a ventilator having, forits eduction opening a closable register which, accordingly as it ispartly or wholly open, will deflect the incoming air upwardly on linesrespectively back toward the window pane, or very nearly a parallel tothe plane of the window, thus avoiding the admission of a direct drafton the persons in the room.

A. further object of my invention is to provide a simple and efficientregister or shutter mechanism for regulating the amount of air permittedto flow into the room, and so to construct and arrange such mechanismthat its operation will be affected little, if any, by rusting of theparts.

Another object of my invention is to make adequate provision foradjustment of the ventilator frame to the window casing to compensatefor variations in..window casing dimensions and to facilitateproperly-fitting installation.

Still another object of my invention is to provide a ventilatorstructure that, when in place, is very firmly fastened and may not betampered with from the outside of the room, but which may be bodilyremoved from the window casing, by one in the room, without the use oftools and without detaching any small parts; and a still further objectis to provide a structure for permanent association with the windowcasing to detachably support the ventilator frame, which is small,inconspicuous, and attachable without material damage to the wood work.

Other and further objects of my invention will become apparent to thoseskilled in the art from the following description taken in conjunctionwith the accompanying. drawings, wherein Figure l is a perspective viewof a window showing my improved ventilator at tached to the casingthereof.

Fig. 2 is a front elevation of a ventilator as attached to a window withparts broken away to show the shutters.

Fig. 3 is a transverse sectional view on the line 38 of Fig. 2.

Fig. 4c is a sectional view on the line l.i-. of Fig. 2 showing theventilator tilted inwardly to permit the raising of a window sash beyondthe point where the sash-lift or handle would normally engage theventilator-casing.

Fig. 5 is a fragmentary sectional view on the line 5-5 of Fig. 2.

Fig. 6 is a fragmentary sectional view on the line 66 of Fig. 2, and;

Fig. 7 is a fragmentary sectional view on the line 7-7 of Fig. 3.

In. the drawings, 10 indicates an upper window sash, and 11 a lowersash, slidable in a window-casin 18.

The ventilator frame, somewhat shorter than the width of the suitablewindow casing, comprises in the particular construction shown a narrowbottom board 14, a wider head-structure 15, and connecting end walls 16,all alining'vertically at their outer edges, so that when the framerests upon the window sill 17, just inside of the lower window sash 12,the window sash may be raised and lowered to open and close theunobstructed rear or intake side of the ventilator. The customarylifting handle 12 of the sash, however, acts as a stop to strike againstthe head wall of the ventilator frame and limit, normally, the range ofmovement of the lower window sash. The front wall 18 of the ventilatormay be a plate of glass, or other material, slopingly mounted to deflectupwardly the incoming air impinging thereon. and to drain outwardly anymoisture that strikes or collects thereon, such drainage being furtheredby sloping the bottom board 11 toward its outer edge. A. packing 38 maybe used to make wmthenproot connection between the bottom board and thewindow sill.

The head 15, that ali'ords the air-delivery outlet, is a rectangleformed by the rear and front strips 19 and 20, secured to the end boards161G and divided into panels as by a cross bar 21 that gives centralbearing to the register mechanism to be described. Dust screens 22 oi?fine wire mesh cover the panel openings.

To support the ventilator frame in a window casing, 1 have provided apairot angle irons 23--23, each of a height approximately equal to theheight oi the ventilator frame, for permanent attachment as by means ofthe screws 21 to the opposite sides of window casing, the inturned legsof the irons lying flush with the window sash. Secured to the angle ironat the top and bottom are extension plates 25 and 26, the upper of whichis provided with a hole 2'? and the lower of which is provided with avertical slot 28, these openings receive members carried by theventilator frame to support and position the latter. Secured to theventilator end-members 16, along the vertical edges which lie inproximity to the window casing,

are vertical channel-bars 29 oi a width sufficient each to receive awooden extension board 30. The board is clamped in the Cl1111- nel byscrews 31 which pass through openings in one side wall oi the channeland are screw threaded into the opposite wall. he boards are providedwith ed 'e opening slots 31 through which the screws pass so thatwhenthe extension boards 30 are positioned to make neat contact with theangle bars or supporting brackets the screws may be tightened, thussecuring the extension boards to the ventilator in proper adjustedposition. This manner of adjusting the overall width oi the ventilator:lrame is for the purpose of allowing for slight differences in windowwidth due to shrinkage or other causes, and it insures that, as erected,

each ventilator frame will adequately iill the sash opening.

I. hang the ventilator 1 nine in the b ackcts 23 so that the ventilatorstructure may be readily removed in its entirety from the brackets by aperson within the room (though not by one outside oit'the window) and Imake the ventilator tiltable in the b ackets, so that head 15 may act asa movable stop with respect to the window sash handles 12. Thus, nearthe bottom oi? the extension boards 30 I provide slide bolts 32 forengagement with the slots 28 of the angle bar plates 26 to act, onoccasion, as sliding.

pivots. Bolts 32 slide in holders 33 each of which'is provided with aflat leaf-spring 34:

that engages a cross pin 35 ,on the bolt to spring-latch the bolt innormal, projected position, engaging slot 28 of the bracket,To-disengage the pivot bolt 32 from the sash-bracket, spring 31- ispressed back and the bolt is retracted. At the top of each extensionboard 30 I have provided a spring pressed plunger bolt 36 carried in aholder 37 for normal engagement with the opening 27 in .thesupportingbracket plate 25, such bolt being provided with a finger-piece for easyretraction. v

By means of the fastening arrangement above described, the four boltsmay be readily slid out of the bracket-openings 27, 28, and theventilator quickly removed from the window. llith the ventilator inplace it is obvious that while the window can be shut it cannot beraised above such a point as will bring the windowhandle 12 into contactwith the head 45. lVhen in place it is obvious that the ventilatorserves as an addi tional window lock. it it becomes necessary to raisethe windowstill tart-her the operator simply slides the upper set ofbolts 36 out of engagement. with the plates 25 and then tips theventilator inwardly as shown in Fig. 4; so that the handle may clear thehead 15, the bolts 32 sliding upwardly in slots 28, and the window canthen be raised as far as desired. A. particular advantage of thisbolted-on construction is that there are no loose parts that may becomelost or misplaced when a servant removes the ventilator, as for windowwashing.

The register-shutter mechanism herein shown comprises a double set ofshutter bars, one set placed under each of the open ings in the head 15,both sets being operable simultaneously. Bars of suitable number, in theparticular instance illustrated, three, are employed in each shutter,and comprise llat metal strips 50, the ends of which are downturned at51 and are perforated to receive the pivotal rods 52. The width of thestrips 50 is such that when swung about their pivots into a horizontalposition, they will completely or substantially close the apertures inthe top frame 15. The pivotal rods 52 which extend through thedownturned ends 51 of the strips extend across the entire length of theopenings in the top frame and near their centers are journaled in theopposite down-turned legs 53 of a memes Near its inner end it isperforated to receive the U-shaped yoke or link 59 which, at its ends,is pivoted to the screws 60 which take into the shutter-connecting bars61. These bars lie along the edges of each of the legs 53 of the channel54 and are pivotally connected as at 62-62 to each of the inturned ends51 of the shutter strips 50. By means of this link connection it isobvious that when the stem 57 is moved outwardly it carries with it theshutter operating bars 61 thus turning the shutters about their pivotrods and closing the openings in the top frame. A particular feature ofadvantage incident to the mounting of the shutters upon the rods 52which in turn are j ournaled in the narrow pressed metal supporting legs53 and is that a plurality of journals are provided, each of which iscomparatively narrow. Obviously such a structure is exposed to theelements and rain will in time rust the metal parts even though they beenameled or japanned most carefully. In this construction the journalsare so narrow that rust can unite only small surfaces, and therust-union cannot be strong enough to afford very great resistance toshutter movement, especially as the shutters are free to turn eitherupon the rods or with the rods, if the latter turn within theirsupporting journals.

In order that the shutter-setting mechanism may not work so easily, asto be liable to be closed by sudden gusts of wind, and to aid in guidingbar 57, I have provided a frictional spring 63 which bears against theunder side of the shutter operating stem 57, and presses the flat topsurface of the stem against the rods 52.

While I have illustrated and described a single embodiment of myinvention it is obvious that various changes might be made thereinwithout departing from the spirit of the invention or the scope of theappended claims.

Having described my invention, what I claim is:

1. The combination of a ventilator adapted for attachment to a windowcasing having a pair of vertically spaced apart apertures at both sidesthereof, and slide bolts carried by the ventilator forengagement withthe apertures, the lower of which is vertically elongated to permitvertical movement of the bolts within the lower apertures when the upperbolts are withdrawn from their apertures.

2. In a window ventilator, the combination with a window casing andsliding sash hav ing an inwardly extending projection there on, of aventilator casing open at its front to receive and permit movement ofthe projection, and act as a limitation stop for the projection, andmanually releasable means to lock the ventilator casing in the windowcasing and prevent vertical movement thereof. I

8. The combination with a ventilator adapted for connection with awindow casing, of vertically disposed angle bars secured to the casingwith one leg of each bar turned inwardly and lying in a plane parallelwith the window and positioned for contact with the inner face of thewindow sash, plates secured to the top and bottom portions of each bar,each said plate having an opening therein, and slide bolts carried bythe ventilator for engagement with the openings.

4:. In a window ventilator, the combination with a window casing andsliding sash having a lift handle, of a ventilator casing open at 1tsfront to receive and permit movement of the window sash handle, and actas a limitation stop therefor, means tiltably supporting the frame inthe sash to permit its movement to allow the sash-handle to pass by forfull window opening, and releasable means for locking the ventilatoragainst such movement.

5. The combination of a ventilator adapted for attachment to a windowcasing at the inner side of the plane in which the window slides, andreleasable fastening means for attaching the ventilator to the casing atver-' tically spaced apart points, the lower fastening means permittingpartial rotation of the ventilator with respect to the casing when theupper fastening means are released, said upper fastening means beingaccessible from the inner side of the window only and adapted when inposition to lock the ventilator from movement.

In testimony whereof I hereunto set my hand in the presence of twosubscribing witnesses.

LoUIs W. WANEMAKER.

In the presence of STANLEY W. Coon, MARY F. ALLEN.

(ioplea of this patent may be obtained for five cents each, byaddressing the Commissioner of Patente,

Washington, D. U.

